CN104769407B - The bearing calibration of the uniformity waveform of tire - Google Patents
The bearing calibration of the uniformity waveform of tire Download PDFInfo
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- CN104769407B CN104769407B CN201380058807.4A CN201380058807A CN104769407B CN 104769407 B CN104769407 B CN 104769407B CN 201380058807 A CN201380058807 A CN 201380058807A CN 104769407 B CN104769407 B CN 104769407B
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- 238000012937 correction Methods 0.000 claims abstract description 69
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 230000009466 transformation Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 22
- 230000002093 peripheral effect Effects 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
- G01M17/022—Tyres the tyre co-operating with rotatable rolls
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
- G01M17/022—Tyres the tyre co-operating with rotatable rolls
- G01M17/024—Tyres the tyre co-operating with rotatable rolls combined with tyre surface correcting or marking means
Abstract
It is urged to by load rotary drum (4) on the basis of tire (T), the uniformity waveform of measurement tire (T) and the rotatable phase of load rotary drum (4).In the waveform for the frequency domain for uniformity waveform obtain after frequency transformation, amplitude and phase at the integer multiple component for the rotating speed for asking for load rotary drum (4) are stored as correction parameter.Correction signal in the rotatable phase scope of load rotary drum (4) when being measured by subtracting the tire calculated based on the correction parameter from uniformity waveform, so as to calculate the uniformity waveform of the tire after being corrected (T).
Description
Technical field
The present invention relates to the technology that the uniformity waveform to being obtained from tyre uniformity testing machine is corrected.
Background technology
All the time, uniformity (uniformity) etc. is measured to the tire that product is made to judge the tire of quality
Test (uniformity test of tire).In the tire test, tire is urged to the load that tyre uniformity testing machine possesses
The outer peripheral face of rotary drum.On this basis, load cell (load cell) by being arranged at load rotary drum etc., measurement makes the wheel
When tire rotates the load that applies on the radial direction, horizontal direction of tire is used as uniformity waveform, and based on measuring
Uniformity waveform carries out the evaluation of tyre evenness.
But, although the load rotary drum for being arranged at tyre uniformity testing machine is for example processed to the cylinder that section is positive round
Shape, but be due to the restriction of machining accuracy etc., strictly speaking, the section is not complete positive round.That is, in load rotary drum
It is concavo-convex that outer peripheral face can be inevitably generated some.So, if making tire and the load rotary drum of not complete positive round
Outer peripheral face rotates tire on the basis of being in contact, then in tire by being present in the bumps of the outer peripheral face of load rotary drum on a small quantity
When, the rotary shaft of load rotary drum can produce whirling vibration.The whirling vibration of generation can be included in by load cell as error
In the uniformity waveform of measurement.As a result, in the presence of the tire calculated based on the uniformity waveform comprising such error
The possibility that the precision of uniformity is also reduced.
Therefore, in order to be removed from the uniformity waveform measured by load cell etc. due to such load rotary drum
The error of whirling vibration, in other words, in order to correct the uniformity waveform measured, has found out several bearing calibrations (patent text
Offer 1, patent document 2 etc.).
For example, in the bearing calibration of patent document 1, being provided with the outside of the diameter of load rotary drum being capable of detection load turn
Bulging outer peripheral face displacement (along the displacement of the radial direction of tire, or along tire horizontal direction displacement) detection
Device (sensor).Also, the displacement of the load rotary drum detected by the detector is measured as whirling vibration.Also,
It is multiplied by obtained from the spring constant of tire and is worth by as due to whirling vibration in the whirling vibration of the load rotary drum measured
The waveform for being applied to the variation of load rotary drum is calculated.If using the waveform of the variation so calculated as correcting
Due to the correction signal of the error of whirling vibration, subtracted from the uniformity waveform actually measured, it becomes possible to uniformity
Waveform is corrected.
In addition, in the bearing calibration of patent document 2, the uniformity waveform measured by load cell is divided into tire
Every 1 rotation data interval, the uniformity waveform after division is superimposed each other.If so by every 1 rotation of tire
The data interval turned carries out the superposition of uniformity waveform, then error can be cancelled by superposition, can obtain average uniform
Property waveform.If subtracting such average uniformity waveform from by the actual uniformity waveform measured of load cell, just
Obtain including the waveform of the margin of error caused by the whirling vibration of load rotary drum.Then, if resulting is contained into the margin of error
Waveform be divided into load rotary drum every 1 rotation data interval, and the waveform after division is superimposed each other, then contain
The waveform of the margin of error is just averaged.It is used for thereby, it is possible to be sought out in the same manner as patent document 1 to caused by whirling vibration
The correction signal that error is corrected.
Citation
Patent document
Patent document 1：The clear 57-141532 publications of Japanese Laid-Open
Patent document 2：The flat 2-259445 publications of Japanese Laid-Open
The content of the invention
The invention problem to be solved
But, in the bearing calibration of patent document 1, sometimes due to the difference of the classification (species, size) of tire, it is difficult to
Precision calculates above-mentioned correction signal well.
For example, in actual tyre uniformity testing machine, tire is urged into the position of load rotary drum mostly according to mark
Accurate species, the tire of size and set.But, there is width in the tire measured by tyre uniformity testing machine than the wheel of standard
The wide tire of tire and the width tire narrower than the tire of standard.When testing such tire, for detecting outer peripheral face
The height of detector of displacement can deviate from optimal position.That is, in the bearing calibration of patent document 1, according to measuring
The difference of the classification of the tire of tyre evenness, the set location of detector can deviate from optimal position, and because detector
The deviation of set location the correction signal calculated can be made to be deviated with appropriate correction signal.It is thereby possible to can be difficult to ask
Take out the good correction signal of precision.
In addition, in the bearing calibration that patent document 2 is recorded, when overlapping multiple waveforms are averaged, if there is
Small phase deviation equal error, then such error can also be applied and be added on correction signal.As a result, because of superposition
Error can be made to become big on the contrary, be difficult to ask for the correction ripple of precision well sometimes in the same manner as the bearing calibration with patent document 1
Shape.
The present invention is completed in view of the above problems, and its object is to there is provided a kind of correction side of the uniformity waveform of tire
Method, the bearing calibration will can be removed because of the influence caused by the whirling vibration of load rotary drum from the uniformity waveform measured,
Improve the measurement accuracy of tyre evenness.
Means for solving the problems
In order to reach above-mentioned purpose, following technological means is taken in the bearing calibration of the uniformity waveform of tire of the invention.
That is, the present invention be it is a kind of on the basis of load rotary drum to be urged to the diameter tire different from the load rotary drum,
While tire is rotated determine tire uniformity when tire uniformity waveform bearing calibration, the tire it is uniform
The bearing calibration of property waveform is characterised by having：Use the load cell and rotatable phase for being arranged at the load rotary drum
Meter, the step of measuring the uniformity waveform of the tire, and measure the rotatable phase of the load rotary drum；By to measuring
Uniformity waveform carry out frequency transformation so that the step of being transformed into the waveform of frequency domain；In the waveform of frequency domain after the conversion, ask
Take the load rotary drum rotating speed integer multiple component at amplitude and the step of phase；The load asked for is turned
Amplitude and phase at the integer multiple component of bulging rotating speed as correction parameter to store the step of；Measure the tire
In uniformity waveform, and rotatable phase scope of the correction parameter based on storage to calculate load rotary drum during tire measurement
The step of correction signal；And by subtracting the correction signal calculated from the uniformity waveform measured, so as to count
The step of calculating the uniformity waveform of the tire after being corrected.
Additionally, it is preferred that can have：The step of correction parameter being asked for by each classification of the tire in advance；Based on advance
The correction parameter asked for, the step of calculating the correction signal by each classification of the tire；And by from survey
The correction signal calculated is subtracted in the uniformity waveform measured, so as to calculate the uniformity ripple of the tire after being corrected
The step of shape.
Invention effect
According to the bearing calibration of the uniformity waveform of the tire of the present invention, it can be removed from the uniformity waveform measured
Influence caused by the whirling vibration of load rotary drum, improves the measurement accuracy of tyre evenness.
Brief description of the drawings
Fig. 1 is the brief figure of tyre uniformity testing machine of the present invention.
Fig. 2 (a) is the figure of uniformity waveform for representing to be measured by tyre uniformity testing machine, and (b) is the partial enlargement of (a)
Figure.
Fig. 3 (a) is the figure for representing to carry out the uniformity waveform measured the result after FFT, and (b) is FFT
The enlarged drawing of result afterwards.
Fig. 4 (a) is the figure of uniformity waveform for representing to measure, and (b) is the figure for representing correction signal, and (c) is to represent school
The figure of uniformity waveform after just.
Embodiment
[the 1st embodiment]
First, the tire for performing the bearing calibration of tire T of the present invention uniformity waveform is illustrated based on accompanying drawing
Evenness tester 1.
As shown in figure 1, tyre uniformity testing machine 1 (tyre uniformity test device) is commented for completed tire T
The characteristics such as valency tyre evenness, so as to carry out product examination.Tyre uniformity testing machine 1 is configured to：As product examination to making
Variation (the Radial Force Variation of the power in the tire radius direction that tire T is produced when rotating：RFV), tire is horizontal
Variation (the Lateral Force Variation of the power in direction：LFV) evaluated.
Specifically, tyre uniformity testing machine 1 has is configured in the way of being rotated freely around the axle center above and below
Main shaft 2.Fixed tire T a pair of wheel rims 3 up and down are provided with the upper end of the main shaft 2.Main shaft 2 can be to being fixed by wheel rim 3
Tire T by around towards above and below axle center rotate freely in the way of be supported.Further, possess in the side of main shaft 2
The substantially cylindric load rotary drum 4 of simulated roadway is formd in its outer peripheral face.The load rotary drum 4 is set as around axle center up and down
It is driven rotation, and freedom of movement in the horizontal direction.The outer peripheral face of load rotary drum 4 can be with being arranged at the wheel of main shaft 2
Tire T is close/remote.
In addition, in the explanation of this specification, using Fig. 1 paper up and down as when illustrating tyre uniformity testing machine 1
Above and below.In addition, using the left and right of Fig. 1 paper as before and after during explanation tyre uniformity testing machine 1.Further, by Fig. 1
Paper insertion direction be used as explanation tyre uniformity testing machine 1 when left and right directions.
Then, the main shaft 2 and load rotary drum 4 for constituting tyre uniformity testing machine 1 are described in detail.
Main shaft 2 is the bar-shaped component of the strip configured along the vertical direction, is provided with its upper end from clamping tire T's up and down
Inner peripheral portion makes the wheel rim 3 that it is fixed.Make the motor 5 that the main shaft 2 rotates in the lower end configuration of main shaft 2, can be electronic by this
Machine 5 makes the tire T fixed by wheel rim 3 is positive and negative freely to be rotated.In addition, the main shaft 2 out of top to be inserted into main spindle box
The state of (spindle housing) 6 inside is configured.
Load rotary drum 4 has：Be formed as short cylindrical shape and the rotary drum portion 7 for making axle center always be configured towards upper and lower；
The rotary shaft 8 being supported to the rotary drum portion 7 in the way of being rotated freely around the axle towards above-below direction；And to rotary shaft
8 frameworks 9 being supported in the way of rotating freely.In addition, being provided with measurement effect in the upper end and lower end of the rotary shaft 8
In the load cell 10 of the load of load rotary drum 4, above-mentioned rotary drum portion 7 and rotary shaft 8 are via load cell 10 by framework 9
Support.Further, load rotary drum 4 can be moved horizontally in the longitudinal direction, and can be with defined load by outside rotary drum portion 7
Side face is urged to tire T.
So, the load measured by load cell 10 is sent to operational part 11.
In the side of above-mentioned load rotary drum 4, the rotation phase of the rotatable phase (frequency, phase) of configuration measurement load rotary drum 4
Position meter 12.The rotatable phase meter 12 is configured to be arranged at the tick lables 13 in rotary drum portion 7 by reading, to measure load rotary drum 4
Rotatable phase.That is, it (is outer in legend that the outer peripheral face in rotary drum portion 7 is pre-formed tick lables 13 with spreading all over circumferencial direction
The upper end side of side face).Also, in the position from the tick lables 13 to side separated by a distance, configuration rotatable phase meter 12.Should
Rotatable phase meter 12 is arranged at the tick lables 13 of the outer peripheral face in rotary drum portion 7 by reading, so as to measure the rotation in rotary drum portion 7
Phase inversion position.The rotatable phase of the load rotary drum 4 measured by the rotatable phase meter 12 and measured by above-mentioned load cell 10
Load is equally sent to operational part 11.
Operational part 11 uses the load measured by load cell 10 and the load rotary drum 4 measured by rotatable phase meter 12
Rotatable phase, calculate the required correction parameter when calculating correction signal.Correction signal is for uniform from what is measured
The waveform of the influence of elimination capacity rotary drum 4, is the waveform used when being corrected in property waveform.In addition, the operational part 11 is deposited
The correction parameter that calculates is stored up, the correction parameter based on storage calculates correction signal in actually measurement tire T uniformity,
And uniformity waveform is corrected using the correction signal calculated.
Specifically, the operational part 11 uses program board (programming console), personal computer etc.,
Carry out process signal according to order as shown below.
Hereinafter, the step of illustrating the signal transacting performed in operational part 11, in other words, the uniformity ripple of the present invention is illustrated
The bearing calibration of shape.
In the bearing calibration of the uniformity waveform of the present invention, load cell 10 and rotatable phase meter 12, measurement are used
Tire T uniformity waveform, and measure the rotatable phase of load rotary drum 4.The uniformity waveform measured is by entering line frequency
Conversion, so as to be transformed into the waveform of frequency domain.In the waveform of frequency domain after the conversion, the integer of the rotating speed of load rotary drum 4 is asked for
Amplitude and phase at multiple component.By the amplitude at the integer multiple component of the rotating speed for the load rotary drum 4 asked for and
Phase is stored as correction parameter.Then, measurement tire T uniformity waveform, and the correction parameter based on storage counts
Correction signal in the rotatable phase scope of load rotary drum 4 during calculation tire uniformity measurement, from the uniformity waveform measured
In subtract the correction signal calculated so that calculate correction after tire T uniformity waveform.
That is, it is necessary to which the tire T for wanting to ask for correction parameter is installed on into tyre evenness when computationally stating correction parameter
Testing machine 1, and measurement uniformity waveform, the rotatable phase of load rotary drum 4 in advance.
Between wheel rim 3 above and below by the way that tire T is clamped into, so that tire T to be installed on to the top of main shaft 2.Then, will
Load rotary drum 4 is moved horizontally to the side of main shaft 2, is urged to the outer peripheral face of load rotary drum 4 (rotary drum portion 7) with defined racking
Tire T.
Then, rotate main shaft 2 using motor 5.So, the tire T of upper end of main shaft 2 is fixed on also with defined turn
Speed rotation, the load rotary drum 4 contacted with tire T coordinates tire T rotation and rotated.Then, turned by being arranged at load
10 pairs of load along tire radius direction, horizontal direction of load cell of drum 4 is measured.
In addition, when by the load cell 10 to measure load, because tire T is generally formed as not with load rotary drum 4
Same diameter, so load rotary drum 4 is rotated with the rotating speed different from tire T rotating speed.So, turned by being installed on load
The load cell 10 of the rotary shaft 8 of drum 4, come measure the component that is correspondingly changed with tire T rotatable phase and with
Uniformity waveform after component that the rotatable phase of the load rotary drum 4 of whirling vibration correspondingly changes is superimposed.
In addition, the load variations of above-mentioned tire T radial direction are referred to as RFV (Radial Force Variation),
And the load variations of horizontal direction are referred to as LFV (Lateral Force Variation).In the following description, enumerate
The method of correction signal is calculated as an example according to RFV values, come the bearing calibration of the uniformity waveform that illustrates present embodiment, but
It is that can be also corrected using LFV values using identical gimmick.
Fig. 2 (a) is the figure for representing the uniformity waveform among the load that is measured by load cell 10 for RFV.In addition,
Fig. 2 (b) is the figure that will be represented among the uniformity waveform shown in Fig. 2 (a) after the part amplification of 0 second~2 seconds.If for example,
Tire T rotating speed is 60rpm situation, then as amplification is shown in Fig. 2 (b), RFV uniformity waveform is measured as phase
Same waveform continuously repeated such waveform with the data cycle of 1 second.
So, in the case where tire T rotating speed is 60rpm (speed 1Hz), if to the uniformity ripple measured
Shape carries out FFT (fast Fourier transform) and calculated, then as shown in Fig. 3 (a) and Fig. 3 (b), in the frequency of the multiple as 1Hz
(for example, 1Hz, 2Hz, 3Hz etc.) place obtains peak value.The rotatable phase of the multiple component of the 1Hz as described above with tire T
Correspondingly change, and should be used to evaluate as tire T uniformity originally.
On the other hand, in the same manner as common uniformity measurement, in the case that time of measuring is short to 1 second or so, due to
Resolution ratio is low, as shown in " broken line " in Fig. 3 (a), and the coarse change for only roughly being captured the change of load is bent
Line.But, in the case of time of measuring length to the number more than 10 seconds of tyre evenness, obtain resolution ratio and uprise so as to which precision is good
The accurate change curve of load change is captured well.For example as Fig. 3 (a), if the time of measuring of tyre evenness
Elongated to 64 seconds, then resolution ratio was uprised, so as to judge the peak that there is precipitous rising at the frequency of the multiple as 1Hz
It is worth (Fig. 3 (a) " waveform of needle pattern ").
In addition, in Fig. 3 (a) curve map, the peak value of the precipitous rising correspondingly changed in the rotatable phase with tire T
Between, also observe other highly low peak values.These peak values turn among the load measured by load cell 10 as above institute
State the component correspondingly changed with the rotatable phase of load rotary drum 4.
For the height of peak value, the component correspondingly changed with the rotatable phase of the load rotary drum 4 not with wheel
The component that tire T rotatable phase correspondingly changes is so high.Therefore, as shown in Fig. 3 (b), if the yardstick of the amplification longitudinal axis
To represent, then it can more accurately judge occur the frequency of peak value.I.e., it is known that：In the multiple as the 0.7Hz different from 1Hz
Each frequency at observe the peak value of the component correspondingly changed with the rotatable phase of load rotary drum 4, so as to
The peak value for the component for correspondingly changing the rotatable phase with tire T in frequency space and the rotatable phase phase with load rotary drum 4
The peak value of the component of ground change is answered clearly to separate.
Therefore,, will be corresponding to the rotatable phase of load rotary drum 4 in the frequency space in the bearing calibration of the present invention
The peak value of the component of ground change and the peak separation of the component correspondingly changed with tire T rotatable phase are opened, only extract with it is negative
The peak value for the component that the rotatable phase of lotus rotary drum 4 correspondingly changes.
Specifically, in the bearing calibration of the present invention, the rotation with load rotary drum 4 is only calculated first as correction parameter
The amplitude A i of the peak value for the component that phase correspondingly changes.In addition, measured using above-mentioned rotatable phase meter 12 observe with
The rotatable phase φ i for each peak value that the rotatable phase of load rotary drum 4 correspondingly changes.The amplitude A i and rotation phase so calculated
Position φ i are prestored as correction parameter to operational part 11.Above is the calculation procedure of correction parameter.
Then, illustrate to calculate correction signal based on the correction parameter so calculated, and use the correction ripple calculated
The step of shape is to correct the signal transacting performed during uniformity waveform.The signal transacting is also had by tyre uniformity testing machine 1
Standby operational part 11 is performed.
First, by above-mentioned steps, correction parameter is asked in advance for the tire T for wanting measurement uniformity.Such shape
Identical step is carried out when the measurement of the uniformity of tire T under condition is according to first calculated correction parameter.That is, by tire T
Main shaft 2 is installed on, the outer peripheral face of load rotary drum 4 is urged on the basis of tire T with defined racking, using electronic
Machine 5 rotates main shaft 2.Then, uniformity waveform is measured by the load cell 10 for the rotary shaft 8 for being installed on load rotary drum 4.
In addition, the tire T now measured uniformity waveform is in accordance with common uniformity measurement condition, it is short when than asking for correction parameter
The time of measuring of 1 second or so in measure.
Then, rotatable phase θ s when uniformity measurement starts are measured by rotatable phase meter 12 and 1 is for example have passed through
Rotatable phase θ e after the time of measuring of or so second at the end of uniformity measurement, and these phases are stored to operational part 11.
Then, it will be stored in the amplitude A i in operational part 11 and rotatable phase φ i be updated in formula (1), by using
Following formula (1) carries out inverse Fourier transform, so as to calculate the phase range being directed in above-mentioned rotatable phase θ s~θ e
The correction signal of the uniformity waveform inside measured.
【Numerical expression 1】
Correction signal=A1cos(θ+φ1)+A2cos(2θ+φ2)+A3cos(3θ+φ3)+…(1)
In addition, A1, A2, A3 and φ 1 of formula (1), φ 2, φ 3, will be stored in operational part 11
The value that numerical value is called as correction parameter.
In addition, the θ of formula (1) be using according to the phase calculated using following formula (2) as scale rotatable phase θ s~θ e model
The phase angle accordingly calculated with the sampling of uniformity waveform in enclosing.
【Numerical expression 2】
Δ θ=(θe-θs)/N0 (2)
Wherein, θ=i Δs θ (i=1,2,3N0), and the hits during N0 represents 1 second of uniformity waveform.
The correction signal so calculated is only corresponding to the rotatable phase of load rotary drum 4 by being isolated in frequency space
The component of ground change is constituted, and is shown the rotation from load rotary drum 4 and is attached to the error of uniformity waveform, in other words, shows
Go out the influence caused by the whirling vibration of load rotary drum 4.
So, if subtracting the correction ripple obtained based on formula (1) and formula (2) from the uniformity waveform actually measured
Shape, it becomes possible to the uniformity waveform after being corrected.
For example, Fig. 4 (a) shows that the tire T rotated to the rotating speed with 60rpm asks for the knot obtained after uniformity waveform
Really.If observing Fig. 4 (a) curve map, understand：The peak value of (A) surrounded in figure by circle~(C) part observation
Peak height it is lower than the peak height of other peak values, the component correspondingly changed with the rotatable phase of load rotary drum 4 be used as by mistake
Difference works.
Therefore, as described above, being substituted into by the correction parameter that will be stored in advance in operational part 11 in formula (1), Neng Gouqiu
Take rotary drum correction signal.As shown in Fig. 4 (b), the peak height step-down for the correction signal asked for, and the generation cycle of peak value
Also it is longer than Fig. 4 (a), and correspondingly change with the rotatable phase of load rotary drum 4.
Then, the correction signal shown in Fig. 4 (b) is subtracted from the uniformity waveform shown in Fig. 4 (a), Fig. 4 (c) is just obtained
Shown such correction uniformity waveform.In the correction uniformity waveform shown in the Fig. 4 (c), in equivalent to Fig. 4 (a)
(A) peak value that the vicinity more than 12 seconds, the vicinity more than 15 seconds, the vicinity more than 18 seconds of~(C) part are identified
Height is roughly the same height with the peak value being identified at other parts.
It follows that in uniformity waveform after calibration, being additional to as error in the uniformity waveform before correction
The component correspondingly changed with the rotatable phase of load rotary drum 4 is removed, and reliably corrects the uniformity waveform measured.
If as described above, the uniformity waveform measured to be transformed into the waveform of frequency domain, in frequency space only in the future
The peak value for coming from the rotation of load rotary drum 4 is separated from the peak value from tire T rotation, it becomes possible to arrange the influence of interference
Except outside, precision only extracts the peak value of the rotation from load rotary drum 4 well.
Furthermore it is preferred that gathering load and the data of rotatable phase for a long time by tire T each classification, and it will collect
Data kept as correction parameter.In this way, it is possible to correction parameter is prepared in advance to various types of other tire T, and can
Correction signal is calculated in a short time to correct uniformity waveform, correctly evaluates tire T uniformity.
In addition, in embodiment of disclosure, without clearly disclosed item for example riving condition, operating condition,
Various parameters, the size of construct, weight, volume etc. are the items for not departing from the scope that those skilled in the art generally implement,
And the value that can be easily envisaged using common those skilled in the art.
In addition, embodiment of disclosure is to illustrate in all aspects, and it is sex-limited to should not be considered as system.This
The scope of invention is pointed out by above-mentioned explanation, but is shown by the scope of claims, it is intended that including with
All changes in the impartial implication of the scope of claims and scope.The application was applied based on November 12nd, 2012
Japanese patent application (JP Patent 2012-248378), its content as with reference to and be incorporated herein.
Symbol description
1 tyre uniformity testing machine
2 main shafts
3 wheel rims
4 load rotary drums
5 motor
6 main spindle boxes
7 rotary drum portions
8 rotary shafts
9 frameworks
10 load cells
11 operational parts
12 rotatable phase meters
13 tick lableses
T tires
Claims (2)
1. it is that load rotary drum is urged into diameter is different from the load rotary drum a kind of bearing calibration of the uniformity waveform of tire
Tire on the basis of, while tire is rotated determine tire uniformity when tire uniformity waveform correction side
Method,
The bearing calibration of the uniformity waveform of the tire is characterised by having：
Using the load cell and rotatable phase meter for being arranged at the load rotary drum, the uniformity waveform of the tire is measured,
And the step of measuring the rotatable phase of the load rotary drum；
By carrying out frequency transformation to the uniformity waveform measured, so that the step of being transformed into the waveform of frequency domain；
In the waveform of frequency domain after the conversion, amplitude and phase at the integer multiple component for the rotating speed for asking for the load rotary drum
The step of position；
Come the amplitude and phase at the integer multiple component of the rotating speed for the load rotary drum asked for as correction parameter
The step of storage；
Measure the uniformity waveform of the tire, and the correction parameter based on storage calculates load rotary drum during tire measurement
Rotatable phase scope in correction signal the step of；And
By subtracting the correction signal calculated from the uniformity waveform measured, so as to calculate the wheel after being corrected
The step of uniformity waveform of tire.
2. the bearing calibration of the uniformity waveform of tire according to claim 1, it is characterised in that
Have：
The step of correction parameter being asked for by each classification of the tire in advance；
Based on the correction parameter asked in advance, the step of calculating the correction signal by each classification of the tire；
And
The correction signal calculated by being subtracted from the uniformity waveform measured, so as to calculate the wheel after being corrected
The step of uniformity waveform of tire.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012248378A JP5871778B2 (en) | 2012-11-12 | 2012-11-12 | Correction method of tire uniformity waveform |
| JP2012-248378 | 2012-11-12 | ||
| PCT/JP2013/080310 WO2014073662A1 (en) | 2012-11-12 | 2013-11-08 | Correction method for tire uniformity waveform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104769407A CN104769407A (en) | 2015-07-08 |
| CN104769407B true CN104769407B (en) | 2017-08-18 |
Family
ID=50684753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380058807.4A Expired - Fee Related CN104769407B (en) | 2012-11-12 | 2013-11-08 | The bearing calibration of the uniformity waveform of tire |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10222300B2 (en) |
| JP (1) | JP5871778B2 (en) |
| CN (1) | CN104769407B (en) |
| DE (1) | DE112013005389B4 (en) |
| TW (1) | TWI537548B (en) |
| WO (1) | WO2014073662A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112012004163B4 (en) * | 2011-10-06 | 2019-06-27 | Kabushiki Kaisha Kobe Seiko Sho | Tire uniformity tester and tire uniformity test method |
| JP6412437B2 (en) * | 2014-05-12 | 2018-10-24 | 株式会社神戸製鋼所 | Tire rolling resistance prediction method and tire rolling resistance prediction apparatus |
| JP5885804B1 (en) * | 2014-10-09 | 2016-03-16 | 株式会社神戸製鋼所 | Method of creating load estimation model in tire uniformity testing machine |
| JP6349271B2 (en) * | 2015-02-26 | 2018-06-27 | 株式会社神戸製鋼所 | Setting method of pressing load of tire testing machine |
| TWI654413B (en) | 2017-02-22 | 2019-03-21 | 日商三菱重工機械系統股份有限公司 | Load measuring apparatus for rotating body |
| US11175200B2 (en) | 2017-02-22 | 2021-11-16 | Mitsubishi Heavy Industries Machinery Systems, Ltd. | Rotating body load measuring device |
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| US4171641A (en) | 1978-07-13 | 1979-10-23 | The B. F. Goodrich Company | Method for measuring uniformity of tires |
| US4404848A (en) * | 1981-02-26 | 1983-09-20 | Kabushiki Kaisha Kobe Seiko Sho | Method for correcting measurement errors in tire uniformity inspecting machines |
| JPS57141532A (en) * | 1981-02-26 | 1982-09-01 | Kobe Steel Ltd | Compensating method for measuring error of tire uniformity machine |
| KR960000995B1 (en) * | 1987-06-12 | 1996-01-15 | 이글 피쳐 인더스트리즈 인코포레이티드 | Apparatus and the method for improving uniformity measurement |
| JP2979228B2 (en) * | 1989-03-31 | 1999-11-15 | 横浜ゴム株式会社 | How to measure tire uniformity |
| JP3182836B2 (en) * | 1992-02-21 | 2001-07-03 | 株式会社デンソー | Tire balance detection device |
| JP3129872B2 (en) * | 1993-02-02 | 2001-01-31 | 株式会社神戸製鋼所 | Unbalance correction method using high-speed tire uniformity machine |
| US5614676A (en) * | 1996-03-08 | 1997-03-25 | The Goodyear Tire & Rubber Company | Method of machine vibration analysis for tire uniformity machine |
| US6035709A (en) * | 1996-07-30 | 2000-03-14 | The Goodyear Tire & Rubber Company | Method of enhancing the measurement accuracy of a tire uniformity machine |
| JPH11142295A (en) * | 1997-11-07 | 1999-05-28 | Toyota Central Res & Dev Lab Inc | Unit test device of wheel |
| JP3788866B2 (en) | 1998-06-04 | 2006-06-21 | 株式会社ブリヂストン | High-order component prediction method and apparatus for high-speed tire uniformity, and tire manufacturing method |
| JP2004217185A (en) * | 2003-01-17 | 2004-08-05 | Toyota Motor Corp | Tire evaluating method |
| US7330326B2 (en) * | 2004-03-09 | 2008-02-12 | Hewlett-Packard Development Company, L.P. | Recordable disk rotational speed error correction circuit |
| JP4528083B2 (en) * | 2004-10-05 | 2010-08-18 | 株式会社ブリヂストン | Tire uniformity measuring method and tire uniformity measuring apparatus used therefor |
| JP2006105775A (en) * | 2004-10-05 | 2006-04-20 | Bridgestone Corp | Tire uniformity measuring method and its manufacturing method |
| JP4781944B2 (en) * | 2006-08-30 | 2011-09-28 | 株式会社神戸製鋼所 | Tire test method and tire test apparatus |
| CN100562733C (en) * | 2006-09-11 | 2009-11-25 | 青岛高校软控股份有限公司 | Remove the measuring method of tyre uniformity test device systematic eccentricity |
| JP4767808B2 (en) * | 2006-10-03 | 2011-09-07 | 株式会社神戸製鋼所 | Tire inspection machine accuracy inspection method |
| JP4369983B1 (en) * | 2008-07-25 | 2009-11-25 | 株式会社神戸製鋼所 | Master tire and inspection method of tire uniformity testing machine using the master tire |
| JP2010204018A (en) * | 2009-03-05 | 2010-09-16 | Kobe Steel Ltd | Tire tester and tire testing method |
| US9120280B2 (en) * | 2009-04-30 | 2015-09-01 | Michelin Recherche Et Technique S.A. | Tire uniformity through identification of process signatures |
| US8701479B2 (en) * | 2012-02-10 | 2014-04-22 | Commercial Time Sharing Inc. | System for characterizing tire uniformity machines and methods of using the characterizations |
-
2012
- 2012-11-12 JP JP2012248378A patent/JP5871778B2/en not_active Expired - Fee Related
-
2013
- 2013-11-08 US US14/434,941 patent/US10222300B2/en not_active Expired - Fee Related
- 2013-11-08 DE DE112013005389.6T patent/DE112013005389B4/en not_active Expired - Fee Related
- 2013-11-08 WO PCT/JP2013/080310 patent/WO2014073662A1/en active Application Filing
- 2013-11-08 CN CN201380058807.4A patent/CN104769407B/en not_active Expired - Fee Related
- 2013-11-12 TW TW102141031A patent/TWI537548B/en not_active IP Right Cessation
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|---|---|
| CN104769407A (en) | 2015-07-08 |
| TWI537548B (en) | 2016-06-11 |
| JP5871778B2 (en) | 2016-03-01 |
| TW201437622A (en) | 2014-10-01 |
| DE112013005389T5 (en) | 2015-08-13 |
| US10222300B2 (en) | 2019-03-05 |
| DE112013005389B4 (en) | 2019-11-14 |
| US20150260613A1 (en) | 2015-09-17 |
| WO2014073662A1 (en) | 2014-05-15 |
| JP2014095660A (en) | 2014-05-22 |
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